Lock



March 12, 1929.,

Filed March 21. 1928 F. F. ROBERT LOCK 3 Sheets-Sheet 1 Inventor Fran/r E 02 644 1 k v By flttarnqy March 1 2, 1929. F, ROBERT 1,705,340

LOCK

Filed March 21, 1928 I 5 Sheets-Sheet 2 o o o 0 o 0 k p o i 45 o "i O 0 0/ o] o o Inventor Fran/r Z 3 Bafiewt March 12, 1929. fio 1,705,340

LOCK

Filed March 21, 1928 s Sheets-Sheet 5 Inventar I Patented Manl Z, 1929.

. 1 UNITED STATES PATENTOFFICE.

FRANK r. ROBERT, or srn rnermtn, MASSACHUSETTS.

LOCK.

' Application filed Mara 21, 1928. Serial No. 268,569.

The present invention relates'generally to locks and more particularly to permutation locks and has for its primeobject to provide a permutation lock which permits a very large number of different combinations being used.

Another very importantobject of the invention resides in the provision of a permutation lock embodying bolts slidable through openings-in a rotatable plate,t-he bolts having notches so that when properly disposed the portions of the plate adjacent the openings may enter the notches to allow the plate to be rocked for actuating securing members.

Another very important object of the invention resides in the provision of a slidable and rotatable'member for actuating the disk and having means thereon for setting the bolts to a starting position. 1

A still further very important object of the invention resides in theprovision of a permutation lock of this nature which is comthe combination and arrangement of parts as will be hereinafter more fully described and claimed. 1

In the drawing:

Figure 1 is a front elevation of a' locker showing my improved lock in the door thereof,

Figure 2 is a vertical section through the lock, looking toward the door parts of the lock removed,

Figure 3 is an enlarged detail sectiontaken substantially on the line 3-3 of Figure 6,

Figure 4: is a perspective View of the disk, Figure 5 is a perspective view of the plate, Figure 6 is a section taken substantially on the line 66 of Figure 3, and Figure 7 is a perspective view of one of the bolts. I

Referring to the drawing in detail it will be seen that the numeral 5' denotes a locker having a door 6 hingedly mounted in an opening therein, the hinges being accessible from the interior of the locker only and the door swinging outwardly from the locker. These features 'of detail, however, are not of the essence of invention and have. been illustrated merely for the purpose of exemplifyingthe preferred embodiment of my improved permutation lock.

The door 6 is provided with an opening? and a serles ofopenings 8 disposed in a circle concentrically about the opening 7. An out- -er guide plate 9 is secured to the door 6 on the outer surface thereof and is provided with an annular series of thumb recesses 10 adjacent the periphery is further provided witha central opening 11 and a circular series of openings 12 concentric about the opening 11. These openings 12 are countersunk. at the i er surface of the plate 9 for thepurpose of providing recesses 14 in whichare mounted resilient rings 15. An inner guide plate 16 is secured to the in- .ner surface of the door 6 in any preferred thereof. The plate manner such as by means of screws 17 countersunk therein and extending through the door and into the securing structure, detail and not of the essence of the invention. The guide plate 16 is provided with a central circular opening 18 registering with openings'7 and H the opening 7 is smaller than the opening 11. The guide plate 16 is provided with a circular series of openings 19 registering with the openings 8, openings 19 being larger indiameter than openi g 8.

The recesses 14 are of greater diameter than the openings 8 and 19. A key plate 20 is ,formed'with a central circularopening 21 11. It will here'be noted that outer guide plate 9. This I however, is a matter of countersunk at the inner surface thereof as at 22 to form a recess; This key plate is pro vided with a plurality of openings 23' ar-, ranged in a .clrcular series concentrically about the opening 21.

ister with the openings 19 and are of equal diameter therewith. The numeral 24 denotes a disk which is formed with a central rectilin ear opening 25 registering with openings 18 and 21. The disk is also provided with acircular series of openings 26 disposed concentrically about the 0pening25 and registering with the openings 19 and 23 and of equal diameter therewith. A circular series of arc uate slots 27 is disposedabout the opening25 within the series of openings 26 but concentric therewith. This disk is provided with a plurality of outwardly extending peripheral-ears 28. A knob o'r handle 29 has a cylindrical shank 3O slidable and rotatable in the opening 11 and merging into a reduced rectilinear Y The openings 23 reg Y extension 31 extending through openings 7, 18, 25 and 21 being slidable in all these openings and rotatable in openings 7, 18 and 21 but this extension 31 is sized to fit the opening 25 so that when the knob or handle is rotated the disk 24 is rocked therewith. The shoulder formed at 32 between the shank and its.

reduced extension31 normally abuts the door '6, the opening 7 being made smaller than the opening 11 for this purpose. A plurality of bolts are constructed with cylindrical bodies 33 and reduced stems 34 at the outer ends thereof. The stems 34 are provided with nular grooves36, a plurality on eachstem in spaced relation.v Each body 33 is provided The extenslon 31 merges at its ends into a reduced threaded stem 40 on which is thread ed a nut 41 for holding ting plate 42. A spring 43 disposed about the extension 31 has one end seated in the countersunk recess 22 and impinges against the key plate 20 and the setting plate 42 to normally hold the shank 31 with its shoulder 32 in abutment with the door 6 as is disclosed in Figure 6. 4

Locking bars 43 are slidable through reg-. istering openings in flanges 45 and 46 on the door and doorway respectively. One of the bars 43 is also slidable through a guide 44 on the inside of the door 6. These bars are pivotally connected as at 47 with the extremities of the ears 28. By rocking the disk 24 in a clockwise direction as illustrated in Figure 3 it will be seen that all of the bars 43 may be pulled out of the opening in the flanges 46 of the doorway so that the door is free to open.

The parts of the look inside the door are housed by a suitable casing 48.

s To 0 erate the lock the person first pulls outwar ly on the knob 29 thus bringing the setting plate 42 against the inner ends of the bolts and shoving the bolts out as far as they will go, that is, until the outer ends of their bodies 33 abut the door 6. The person then shoves the bolts inwardly by their stems 34 for the proper number of clicks until the notches 37 are disposed to receive the edges of the disk 24 at the openings 26. Of course the person must know the' combination, that is must know how many clicks to shove in a each bolt.

Obviously the combination may be changed by changing the location of the bolt in respect to the openings 12, 8, 19, 26 and 23. When the bolts are properly set as is illuson said stem 40, a settrated in Figure 3 it will be seen that the disk 24 may be rocked clockwise sufficient to move thebars 43 out of the openings of the flange 46. Securing elements 50 extend through plate 20, 16,the door 6 and into the plate 9 "and extend through the arcuate slots 27 and in the arcuate slots 27 the securing elements 50 have anti-friction rollers, washers or the like thereon so that the disk 24 may be easily rotated and limited in its rotation.

Obviously when it is desired to change the bolts the nut 41 is removed from the stem 40 soas to move the plate 42 and the spring 43. The securing elements 50 are removed so that the entire lock may be disassembled if desired. However to merely change the bolts it is not necessary to remove the securing elements but only the plate 42 which limits the inward movement of the bolts. Obviously the bolts may be removed inwardly and placed in other openings to change the'combination as may be desired.

It is thought that the construction, operation and advantages of the invention can now be quite apparent to those skilled in this art,

without a more detailed description thereof,

The present embodiment of the invention has been disclosed in detail merely by way ofexample since in actual practice it attains the features of advantage enumerated asdesirable in the statement of. the invention and the above description. It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention-as hereinafter claimed or sacrificing any of its adbeing provided with registering annular series of openings about the first mentioned openings, bolts slidable in the openings of the series and having notches so that'the bolts may be slid to place the notches for receiving portions of the disk adjacent the openings in the series thereof to permit the rocking of the disk, a shank slidable through the first mentioned openings for rotating the disk, said shank being rotatable in the openings of the plate, a setting plate on the shank so that said shank may be slid outwardly so that the setting plate engages the bolts to shove them to their outermost position, said bolts being provided with annular grooves and resilient rings mounted in the outer guide plate to engage sailil groove to cause a click as said bolts are sli 2. In a permutation lock, an outer guide plate, an inner guide plate, a key plate, a disk between the inner guide plate, and the key plate, said plates having registerring openings, said disk having an open 1ng registering with the other openings, said plates and said disk being provided with registering annular series of openings about the firstmentioned openings, bolts slidable in the openings of the series and having notches so thatthe bolts may be slid,to place serles and having notches so that the bolts the notches for receiving portions of the disk adjacent the openings'in the series thereof to permit the rocking of the disk, a shank slidable through the first mentioned openings for rotating the disk, said shank being rotatable in the openings of the plate, a setting plate on the shank so that said shank may be slid outwardly so that the setting plate engages the bolts to shove them to their outer most position, said bolts being provided with annular grooves and resilient rings mounted in the outer guide plate to engage said groove tocause a click as said bolts are slid, a spring on said shank normally holding the same inwardly. i

3. In a permutation lock, an outer guide plate, an inner guide plate, a key plate, a disk between the inner guide'pla-te and the key,

plate, said plates having registering openings, said disk having an opening registering wlth the other openings, saidplates and said disk being provided withregistering annular 'se ries of openings about the first mentioned openings, bolts slidable in the openings of the may be slid toplace the notches for receiving portions of the disk adjacent the openings in the series thereof to permit the rocking of the disk, a shank slidable through the first men-g tioned openings for rotating the disk, said shank being rotatable in the openings of the plate, the openingsin the series of the outer guide plate is smaller than the other openings of the other series, said bolts being formed with reduced stems slidable through the openings in the series of the outer guide plates and 'said stems having grooves thereon, said openings of the series in the guide plate being countersunk to form recesses, resilient rings in the recesses to engage with the grooves to cause-a ICliCk as the bolts are slid.

4. In a permutation lock, an outer guide plate, an inner guide plate, a key plate, a disk, between the inner guide plate and the key plate, said plates having registering openings, said disk. having an opening reglsterin O ,with the other openings, saidplates and said disk being provided with registering annular series of openings aboutthe first mentioned openings, bolts slidable in the openings of the series and having notches so that the bolts may he slid to place the notches for receiving port-ions of the" disk adjacent the openings in the seriesthereof to permit the rocking of the disk, said disk being provided with an annu- 

